263868164 has 24 divisors (see below), whose sum is σ = 542001600. Its totient is φ = 110029536.

The previous prime is 263868161. The next prime is 263868217. The reversal of 263868164 is 461868362.

263868164 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (263868161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126314 + ... + 128385.

It is an arithmetic number, because the mean of its divisors is an integer number (22583400).

Almost surely, 2^263868164 is an apocalyptic number.

It is an amenable number.

263868164 is an abundant number, since it is smaller than the sum of its proper divisors (278133436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263868164 is a wasteful number, since it uses less digits than its factorization.

263868164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254747 (or 254745 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 263868164 is about 16244.0193302027. The cubic root of 263868164 is about 641.4000632451.

The spelling of 263868164 in words is "two hundred sixty-three million, eight hundred sixty-eight thousand, one hundred sixty-four".